Submission
Submit your own article trough this form
Name:
Article Title:
Email:
File:
Review Process
Instructions for Authors
 

   
 
About us

Banat's University of Agricultural Sciences and Veterinary Medicine
"King Michael I of Romania" from Timisoara
   
 
Issues
The archive of articles

2019 Journal of Agroalimentary Processes and Technologies 2019, 25(4)
 
2019 Journal of Agroalimentary Processes and Technologies 2019, 25(3)
 
2019 Journal of Agroalimentary Processes and Technologies 2019, 25(2)
 
2019 Journal of Agroalimentary Processes and Technologies 2019, 25(1)
 
2018 Journal of Agroalimentary Processes and Technologies 2018, 24(4)
 
2018 Journal of Agroalimentary Processes and Technologies 2018, 24(3)
 
2018 Journal of Agroalimentary Processes and Technologies 2018, 24(2)
 
2018 Journal of Agroalimentary Processes and Technologies 2018, 24(1)
 
2017 Journal of Agroalimentary Processes and Technologies 2017, 23(4)
 
2017 Journal of Agroalimentary Processes and Technologies 2017, 23(3)
 
2017 Journal of Agroalimentary Processes and Technologies 2017, 23(2)
 
2017 Journal of Agroalimentary Processes and Technologies 2017, 23(1)
 
2016 Journal of Agroalimentary Processes and Technologies 2016, 22(4)
 
2016 Journal of Agroalimentary Processes and Technologies 2016, 22(3)
 
2016 Journal of Agroalimentary Processes and Technologies 2016, 22(2)
 
2016 Journal of Agroalimentary Processes and Technologies 2016, 22(1)
 
2015 Journal of Agroalimentary Processes and Technologies 2015, 21(4)
 
2015 Journal of Agroalimentary Processes and Technologies 2015, 21(3)
 
2015 Journal of Agroalimentary Processes and Technologies 2015, 21(2)
 
2015 Journal of Agroalimentary Processes and Technologies 2015, 21(1)
 
2014 Journal of Agroalimentary Processes and Technologies 2014, 20(4)
 
2014 Journal of Agroalimentary Processes and Technologies 2014, 20(3)
 
2014 Journal of Agroalimentary Processes and Technologies 2014, 20(2)
 
2014 Journal of Agroalimentary Processes and Technologies 2014, 20(1)
 
2013 Journal of Agroalimentary Processes and Technologies 2013, 19(4)
 
2013 Journal of Agroalimentary Processes and Technologies 2013, 19(3)
 
2013 Journal of Agroalimentary Processes and Technologies 2013, 19(2)
 
2013 Journal of Agroalimentary Processes and Technologies 2013, 19(1)
 
2012 Journal of Agroalimentary Processes and Technologies 2012, 18(4)
 
2012 Journal of Agroalimentary Processes and Technologies 2012, 18(3)
 
2012 Journal of Agroalimentary Processes and Technologies 2012, 18(2)
 
2012 Journal of Agroalimentary Processes and Technologies 2012, 18(1)
 
2011 Journal of Agroalimentary Processes and Technologies 2011, 17(4)
 
2011 Journal of Agroalimentary Processes and Technologies 2011, 17(3)
 
2011 Journal of Agroalimentary Processes and Technologies 2011, 17(2)
 
2011 Journal of Agroalimentary Processes and Technologies 2011, 17(1)
 
2010 Journal of Agroalimentary Processes and Technologies 2010, 16(4)
 
2010 Journal of Agroalimentary Processes and Technologies 2010, 16(3)
 
2010 Journal of Agroalimentary Processes and Technologies 2010, 16(2)
 
2010 Journal of Agroalimentary Processes and Technologies 2010, 16(1)
 
2009 Journal of Agroalimentary Processes and Technologies 2009, 15(4)
 
2009 Journal of Agroalimentary Processes and Technologies 2009, 15(3)
 
2009 Journal of Agroalimentary Processes and Technologies 2009, 15(2)
 
2009 Journal of Agroalimentary Processes and Technologies 2009, 15(1)
 
2008 Journal of Agroalimentary Processes and Technologies 2008, 14(2)
 
2008 Journal of Agroalimentary Processes and Technologies 2008, 14(1)
 
2007 Journal of Agroalimentary Processes and Technologies 2007, 13(2)
 
2007 Journal of Agroalimentary Processes and Technologies 2007, 13(1)
 
2006 Journal of Agroalimentary Processes and Technologies 2006, 12(2)
 
2006 Journal of Agroalimentary Processes and Technologies 2006, 12(1)
 
2005 Scientifical Researches. Agroalimentary Processes and Technologies, 2005, 11(2)
 
2005 Scientifical Researches. Agroalimentary Processes and Technologies, 2005, 11(1)
 
 
 
 

30 .   Antioxidant activity of some fresh vegetables and fruits juices

Authors: Delia -Gabriela Dumbravă, Nicoleta-Gabriela Hădărugă, Camelia Moldovan, Diana- Nicoleta Raba, Mirela -Viorica Popa, B. Rădoi

Volume 17, Issue 2;
Pages: 163-168;
ISSN: 2069-0053 (print) (former: ISSN:1453-1399), Agroprint;
ISSN (online):2068 9551



Abstract:

This paper presents the determination of some vegetables and fruits juices antioxidant activity, using the free radical 2,2- diphenyl- 1-picrylhydrazyl (DPPH) method, and correlation of the results with the C vitamin concentration in the sample. It was determined, by the iodometric method, the vitamin C concentration both in the raw materials (apple, beetroot, red cabbage, tomatoes and pink grapefruit) and in the juices obtained from this. It was observed that vitamin C concentration in the juices are higher than in the raw materials, the richest in ascorbic acid being the pink grapefruit juice (81,612 mg/100ml), followed by the beetroot juice (68.014 mg/100ml). The lowest vitamin C concentration was found in the apple juice (20,401 mg/100ml). Analysing the obtained results it was conclude that between antioxidant activity and juices vitamin C concentration exists a direct correlation.

Keywords: vitamin C, antioxidant activity, DPPH, beetroot, red cabbage, apple, tomatoes, pink grapefruit

PDF Version

 
 
   
Contact
Banat's University of Agricultural Sciences and Veterinary Medicine
"King Michael I of Romania" from Timisoara

Faculty of Food Processing Technology
300645-Timisoara, Calea Aradului 119, Romania
Tel: +40-256-277423 , Fax: +40-256-277326

Copyright © 2019 Journal of Agroalimentary Processes and Technologies                                                                                                                                  Web design by Royalty